Tracker-board for pneumatic musical instruments.



A. PHILIPPS.

TRACKER BOARD FOR PNEUMATIG MUSICAL INSTRUMENTS.

APPLICATION rmm FEB. 1', 1906.

908,492. Patented Jan. 5, 1909;

v jiveniar FZZ'7 $5$' 6 g @34 Q 7' 15; 5

. fig-y h* 77 my /z o zeyg neoes cee.

fipeoifiection of Leer-set nels with pneumatically. operated valves or of the instrument.

' inafter and the features ofnovelty other devices, which control the operation The cleaning of such channels presents practical difficnities on ec count of their small diameter, and it is the object of my invention to provide e. con-- struction for facilitating the cleaning of such. channels and the seperotion and elimination of dust or other foreign matter.

The invention will be fully described herepointed out in the appended claims.

Reference is to be had to the ecconrgenymy; drawing 1n'wb1ch Figure 1 represents a cross section of s.

' tracker board embodying my invention and to rest.

Fig. 2 is e similar view with the parts in a different position.

0 indicates one of the chenneis leading to the valves or other devices which govern operation ofthe instrument. This channel is connected. at the top with at cross channel f preferably extending entirely through the tracker board proper A. in the continuetion of the channels, is located the channel a leading to the upper face of the tracker board on which the music-sheet is adopted The cross channel is enierged one end to form a chamber which. is connected by a channel 0 with Wind-producing devices such as bellows, in any approved manner. At the inner end of the chamber Z1 1 may locate a. disk or strip 5; provided with an aperture or apertures connecting with cross channelf. A movable or removsbie cover d is employed for normally closing the outer end of the chamber Z) and the said cover'mcy, if desired, be constructed to em brace the tracker board so as to also close the opposite end'of the cross channel es shown.

It will be seen that the wind-inducing vices, according as they are pressure or suction devices, will reduce a current of in one direction or t e other in the channel c,

nelf; fi'om tile to the chcrmels ngenient of and inc and. a respectively.

channels in itself sures s, sens v ticn. M men the mo. instrumer is operated by section any dust which may be drawn in through the channel 6 will have 'OPpOMUBity to settle either in the ber c, or (end this will generally be the c cliennelf on the inside oi tine or stnp g. fi lvyremoving the cover d, or .cving it aside so as to clear the opening the chamber 5, (see 2) the perforations of the or strip 9 ere recdily for cleaning, l 1 r E. uncovering is see toe the other end of the coonnelf, these channels may be cleaned. The cltisnnels a, e be clec by inserting c needle or the like from Y The tire.

upper or i contrection at the onne i (t, which centres seine so the iislc strip This coni L I. y when the Windindncing (evices ere pressure devices, so that in this c 9 duet will. be retained first on the disk. e-

c-nd. cnyforeign matter which may through said. disk will be 9.1'16 (l. at the constriction of the chsnnel cevever, if wind is induced by sec ion I refer not to use any constriction in tlrc'cbennel Various modifications y be Without deport of my inverttion.

1 claim; 1. It. creted most-eel 1 ticn enertcre elly op- I pro d d with a. channel L to J8 gcver ed by the troveling music elm el, a, cross cot}; or seid first nemeci one l. one end to form cine cover for said it four tic. connected who 2. ch "the trevsling l cross chcnnel o-onn :tetl firstnamed on lldlilg entirely c fourth cliennei I e reel, and at end of sold cross through the t connected with. movable cover for est... channel S. A 'mcker board for pneumaticzwj eratad musical instruments, provided cbmmel adapted. to be gaverz d b eling music-Shae channel tracker E30 "0. C2 so said immisf said ahm'lber, and. means for movably cover- I e outer end of said chamber and the and of the cross channel.

b11011 whereof, I have hereunto set .zm l 12 me presence of two subscribing 15 AUGUST PHILIPPS.

med sham bamg aniarged ORB 1 her, periomted member.

7 JEAN GRUND, ":0 :1- fourth ch QARL GRUND. 

